Filament Puller
thingiverse
I like this design because i dont need some stupid durathane rollers :) I bought the paint/inkt rollers :) Because I already bought the Nema17 planetary motor as suggested by lymann http://www.banggood.com/Planetary-Gearbox-Motor-Nema-17-Stepper-Motor-Deceleration-Planet-Reduction-ratio-15_18-p-995316.html?rmmds=myorder , i decided to copy this design and change it to be used with a Nema17
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